.old-browser {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 99999;
  background-color: #fff;

  img {
    position: absolute;
    width: 704px;
    height: 405px;
    top: 50%;
    left: 50%;
    margin-left: -352px;
    margin-top: -203.5px;
  }
}